I see that this topic was posted back in 2013, but I think it bears repeating.
Turns out, Staples sells a pretty healthy variety of incontinence supplies, including Molicare Super Plus diapers. The prices are decent, though not spectacular, but the best part is that you can buy them online and pick them up in the store.
So often we get questions here about where people can get decent quality diapers locally, and we finally have an answer. I wonder if you can buy them in the store . . .